package com.wsy.filter;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Slf4j
public class UnameCheckGatewayFilter implements GatewayFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();

        String access_token = String.valueOf(request.getQueryParams().get("access_token"));

        if (access_token.trim().length()<3){
            log.info(">>>>>uname的长度必须大于3位,参数校验失败");
            response.setStatusCode(HttpStatus.LENGTH_REQUIRED);
            return response.setComplete();
        }

        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;
    }


}
